Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-08-2023 and time 04:42:15 (Italy) in region 3 km W Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km W Monte Cavallo (MC), on

  • 23-08-2023 02:42:15 (UTC)
  • 23-08-2023 04:42:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0040, 12.9670 at 13 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monte Cavallo MC 3 145 145
Serravalle di Chienti MC 8 1070 1215
Pieve Torina MC 8 1458 2673
Fiordimonte MC 11 202 2875
Muccia MC 11 915 3790
Pievebovigliana MC 12 866 4656
Visso MC 13 1107 5763
Sellano PG 13 1079 6842
Preci PG 15 724 7566
Ussita MC 15 444 8010
Fiastra MC 16 559 8569
Sefro MC 16 422 8991
Camerino MC 17 6974 15965
Acquacanina MC 17 121 16086
Valtopina PG 18 1398 17484
Nocera Umbra PG 19 5839 23323
Castelsantangelo sul Nera MC 19 281 23604
Pioraco MC 20 1134 24738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2023-08-23
02:42:15		 43.0037 12.9673 13 2024-09-10
16:44:21		 Bollettino Sismico Italiano INGV 123876561
Reviewed
Rev100 		ML 1.5 2023-08-23
02:42:15		 43 12.974 11 2023-08-23
02:55:28		 Sala Sismica INGV-Roma 120396601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-23 02:42:15 ± 0.06
Latitude 43.0037 ± 0.0027
Longitude 12.9673 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 123876561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74374
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 123876561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-07 14:39:59

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 39
Type of magnitude ML
Reference to an origin 120396601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-23 02:55:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2023-08-23T02:42:40.86 0.6 undecidable manual S 171 82.5507 92 0.66 36
IV.NARO.HHZ. 2023-08-23T02:42:38.60 0.3 undecidable manual S 335 74.2701 92 0.61 58
IV.PIEI.HHZ. 2023-08-23T02:42:36.88 0.3 undecidable manual S 330 68.5758 92 0.4 62
IV.RM33.EHZ. 2023-08-23T02:42:34.31 0.3 undecidable manual S 160 58.497 93 0.53 61
IV.FRON.EHZ. 2023-08-23T02:42:34.55 0.3 undecidable manual S 341 60.2952 93 0.28 65
IV.SSFR.HHZ. 2023-08-23T02:42:32.16 0.1 undecidable manual S 343 50.3163 93 0.56 82
IV.MURB.HHZ. 2023-08-23T02:42:31.32 0.3 undecidable manual S 309 45.9207 94 0.87 54
IV.FIAM.HHZ. 2023-08-23T02:42:30.08 0.3 undecidable manual P 171 82.5507 92 0.23 62
IV.LNSS.HHZ. 2023-08-23T02:42:30.37 0.3 undecidable manual S 172 44.8218 94 0.21 67
IV.MF5.EHZ. 2023-08-23T02:42:29.98 0.1 undecidable manual S 92 40.0266 94 1.12 67
IV.MOMA.HNZ. 2023-08-23T02:42:28.74 0.3 undecidable manual S 236 39.1275 95 0.1 69
IV.EL6.EHE. 2023-08-23T02:42:28.41 0.3 undecidable manual S 17 37.7289 95 0.16 70
IV.NARO.HHZ. 2023-08-23T02:42:28.52 0.1 undecidable manual P 335 74.2701 92 -0.05 88
IV.FOSV.EHZ. 2023-08-23T02:42:27.78 0.1 undecidable manual S 333 36.3414 95 -0.11 93
IV.TERO.HHZ. 2023-08-23T02:42:27.24 0.3 undecidable manual P 129 66.8775 92 -0.19 65
IV.PIEI.HHZ. 2023-08-23T02:42:27.49 0.1 undecidable manual P 330 68.5758 92 -0.21 86
IV.GAVE.EHZ. 2023-08-23T02:42:27.55 0.3 undecidable manual S 190 35.0427 95 0 71
IV.RM33.EHZ. 2023-08-23T02:42:26.09 0.3 undecidable manual P 160 58.497 93 -0.05 68
IV.MMO1.EHZ. 2023-08-23T02:42:26.62 0.1 undecidable manual S 112 31.3464 96 0.05 96
IV.FRON.EHZ. 2023-08-23T02:42:26.27 0.1 undecidable manual P 341 60.2952 93 -0.15 88
IV.GUMA.HHZ. 2023-08-23T02:42:26.97 0.1 undecidable manual S 77 30.5472 97 0.62 84
IV.SNTG.HHZ. 2023-08-23T02:42:25.44 0.1 undecidable manual S 356 27.9498 98 -0.22 92
IV.ARVD.HHZ. 2023-08-23T02:42:25.34 3.0 undecidable manual S -0.99 0
IV.SSFR.HHZ. 2023-08-23T02:42:24.68 0.1 undecidable manual P 343 50.3163 93 -0.2 89
IV.PF6.EHN. 2023-08-23T02:42:24.25 0.1 undecidable manual S 51 23.6541 101 -0.28 91
IV.MURB.HHZ. 2023-08-23T02:42:24.15 0.3 undecidable manual P 309 45.9207 94 -0.07 69
IV.ATFO.HHZ. 2023-08-23T02:42:24.83 3.0 undecidable manual S 0.66 0
IV.MC2.EHZ. 2023-08-23T02:42:24.20 0.3 undecidable manual S 120 20.6682 104 0.44 67
IV.ARRO.EHZ. 2023-08-23T02:42:24.51 3.0 positive manual P 0.9 0
IV.TSM1.DHE.01 2023-08-23T02:42:24.30 0.3 undecidable manual P 322 48.3183 93 -0.28 66
IV.NRCA.HHZ. 2023-08-23T02:42:23.87 0.1 undecidable manual S 148 22.3554 102 -0.31 92
IV.MOMA.HNZ. 2023-08-23T02:42:23.12 0.3 undecidable manual P 236 39.1275 95 -0.05 71
IV.CSP1.EHZ. 2023-08-23T02:42:23.86 0.3 undecidable manual S 63 21.5673 103 -0.13 71
IV.MF5.EHZ. 2023-08-23T02:42:23.55 0.1 negative manual P 92 40.0266 94 0.25 90
IV.LNSS.HHZ. 2023-08-23T02:42:23.77 0.1 undecidable manual P 172 44.8218 94 -0.28 89
IV.GAVE.EHZ. 2023-08-23T02:42:22.37 0.1 negative manual P 190 35.0427 95 -0.17 93
IV.FOSV.EHZ. 2023-08-23T02:42:22.35 0.1 negative manual P 333 36.3414 95 -0.39 88
IV.ATCC.EHZ. 2023-08-23T02:42:22.02 3.0 undecidable manual S -0.2 0
IV.EL6.EHE. 2023-08-23T02:42:22.71 0.1 positive manual P 17 37.7289 95 -0.24 90
IV.MMO1.EHZ. 2023-08-23T02:42:21.75 0.1 negative manual P 112 31.3464 96 -0.23 91
IV.GUMA.HHZ. 2023-08-23T02:42:21.96 0.1 negative manual P 77 30.5472 97 0.11 95
IV.SNTG.HHZ. 2023-08-23T02:42:21.12 0.1 undecidable manual P 356 27.9498 98 -0.34 90
IV.FDMO.HHN. 2023-08-23T02:42:21.04 0.1 undecidable manual S 69 10.3785 131 -0.25 94
IV.CESI.HHZ. 2023-08-23T02:42:20.23 0.1 undecidable manual S 272 5.0949 153 -0.19 99
IV.ASSB.HHZ. 2023-08-23T02:42:20.63 3.0 undecidable manual S -2.58 0
IV.PF6.EHN. 2023-08-23T02:42:20.55 0.1 positive manual P 51 23.6541 101 -0.25 92
IV.MC2.EHZ. 2023-08-23T02:42:20.25 0.1 negative manual P 120 20.6682 104 -0.11 96
IV.NRCA.HHZ. 2023-08-23T02:42:20.33 0.1 negative manual P 148 22.3554 102 -0.27 92
IV.FEMA.HNE. 2023-08-23T02:42:20.85 0.1 undecidable manual S 125 8.0808 140 -0.01 99
IV.CSP1.EHZ. 2023-08-23T02:42:20.38 0.1 positive manual P 63 21.5673 103 -0.11 95
IV.FEMA.HNE. 2023-08-23T02:42:18.70 0.1 negative manual P 125 8.0808 140 0.02 99
IV.FDMO.HHN. 2023-08-23T02:42:18.81 0.1 negative manual P 69 10.3785 131 -0.12 97
IV.CESI.HHZ. 2023-08-23T02:42:18.35 0.1 undecidable manual P 272 5.0949 153 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.4 0.0003318215 0.08 AML other m 2023-08-23T02:42:20.27
IV.CESI.HNE. ML:1.5 0.0003980982 0.1408 AML other m 2023-08-23T02:42:20.27
IV.CESI.HHN. ML:1.5 0.0004159936 0.08 AML other m 2023-08-23T02:42:20.49
IV.CESI.HNN. ML:1.5 0.0003840928 0.08 AML other m 2023-08-23T02:42:20.49
IV.NRCA.HNN. ML:1.6 0.0002692238 1.84 AML other m 2023-08-23T02:42:23.93
IV.CSP1.EHE. ML:2.1 0.0007902235500000001 0.1392 AML other m 2023-08-23T02:42:24.14
IV.CSP1.EHN. ML:2.2 0.000984 0.14 AML other m 2023-08-23T02:42:24.07
IV.NRCA.HHE. ML:1.9 0.00046786945000000003 0.12 AML other m 2023-08-23T02:42:24.49
IV.NRCA.HNE. ML:1.8 0.00040130754999999997 0.12 AML other m 2023-08-23T02:42:24.55
IV.NRCA.HHN. ML:1.7 0.00029000000000000006 0.1 AML other m 2023-08-23T02:42:24.63
IV.MMO1.EHN. ML:1.4 0.00010714999999999999 0.22 AML other m 2023-08-23T02:42:26.79
IV.GUMA.HNE. ML:1.9 0.00033850585 0.2112 AML other m 2023-08-23T02:42:27.15
IV.GUMA.HHE. ML:2.0 0.0005215 0.22 AML other m 2023-08-23T02:42:27.17
IV.GUMA.HNN. ML:1.8 0.0003057657 0.2592 AML other m 2023-08-23T02:42:27.18
IV.GUMA.HHN. ML:1.7 0.00023199999999999997 1.3 AML other m 2023-08-23T02:42:27.22
IV.GAVE.HNE. ML:1.8 0.00021786469999999998 0.4304 AML other m 2023-08-23T02:42:27.69
IV.MMO1.EHE. ML:1.1 0.000057174839999999996 0.2208 AML other m 2023-08-23T02:42:27.59
IV.FOSV.EHE. ML:1.0 0.000038849999999999996 1.04 AML other m 2023-08-23T02:42:28.29
IV.GAVE.EHN. ML:1.6 0.00016881665000000002 0.12 AML other m 2023-08-23T02:42:28.27
IV.FOSV.EHN. ML:1.2 0.00006245 0.38 AML other m 2023-08-23T02:42:28.21
IV.GAVE.EHE. ML:1.6 0.0001678662 0.16 AML other m 2023-08-23T02:42:28.61
IV.MF5.EHN. ML:1.3 0.00006371086500000001 0.3792 AML other m 2023-08-23T02:42:30.24
IV.MF5.EHE. ML:1.0 0.000034541834 0.16 AML other m 2023-08-23T02:42:30.76
IV.LNSS.HHN. ML:1.8 0.00016949999999999997 0.3 AML other m 2023-08-23T02:42:30.65
IV.MURB.HHN. ML:1.4 0.00007075000000000001 0.18 AML other m 2023-08-23T02:42:31.84
IV.LNSS.HHE. ML:1.6 0.00011183185000000001 1.8 AML other m 2023-08-23T02:42:32.99
IV.MURB.HHE. ML:1.5 0.00009022753499999999 0.24 AML other m 2023-08-23T02:42:32.75
IV.SSFR.HNN. ML:1.7 0.0001351838 0.1408 AML other m 2023-08-23T02:42:32.84
IV.SSFR.HHN. ML:1.6 0.000091 0.14 AML other m 2023-08-23T02:42:32.84
IV.SSFR.HHE. ML:1.6 0.0001101 0.18 AML other m 2023-08-23T02:42:34.13
IV.SSFR.HNE. ML:1.7 0.00013461099999999998 0.1408 AML other m 2023-08-23T02:42:34.21
IV.FRON.EHE. ML:1.2 0.000036400000000000004 0.22 AML other m 2023-08-23T02:42:34.68
IV.FRON.EHN. ML:1.3 0.000041998375000000006 0.16 AML other m 2023-08-23T02:42:34.68
IV.RM33.EHE. ML:1.2 0.000031680355 0.3392 AML other m 2023-08-23T02:42:34.70
IV.RM33.EHN. ML:1.1 0.000024407315 0.24 AML other m 2023-08-23T02:42:35.42
IV.PIEI.HHN. ML:1.1 0.0000206 0.2 AML other m 2023-08-23T02:42:37.43
IV.TERO.HHE. ML:0.9 0.0000146401845 0.12 AML other m 2023-08-23T02:42:37.66
IV.PIEI.HHE. ML:1.2 0.00003225 0.28 AML other m 2023-08-23T02:42:37.59
IV.NARO.HHN. ML:0.8 0.000009570025 0.2 AML other m 2023-08-23T02:42:39.27
IV.TERO.HHN. ML:0.9 0.000013986813 0.2192 AML other m 2023-08-23T02:42:39.70
IV.NARO.HHE. ML:0.8 0.000012005680000000001 0.1392 AML other m 2023-08-23T02:42:43.21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download